Twisting of textile and other yarns, threads and filaments



Oct. 16, 1951 J FOSTER 7 2,571,854

TWISTING OF TEXTILE AND OTHER YARNS, THREADS AND FILAMENTS Filed Jan. 6,1951 s Sheets-Sheet 1 Oct. 16, 1951 J. FOSTER 2,571,854

TWISTING 0F TEXTILE AND OTHER YARNS, THREADS AND FILAMENTS Filed Jan. 6,1951 3 Sheet's-Sheet 2 Oct. 16, 1951 R. FOSTE 2,571,854

TWISTING OF TEXTILE AND OTHER YARNS, THREADS AND FILAMENTS Filed Jan. 6,1951 3 Sheets-Sheet 5 Patented Oct. 16, 1951 TWISTING OF TEXTILE ANDOTHER YARNS, THREADS AND FILAMENTS John Raymond Foster, Helmshore,

Rossendale,

England, assignor to T. M. M. (Research) Limited, Helmshorc, Rossendale,England Application January 6, 1951, Serial No. 204,715 In Great BritainJanuary 10, 1950 9 Claims.

This invention is concerned with such devices for twisting textile andother yarns, threads and filaments, as are adapted to impart to the yarnor the like more than one turn of twist for each revolution of thedevice, an effect which is achieved by drawing the yarn or the like froma package down through a hollow spindle and outwardly and upwardlytherefrom to form a balloon about the package and rotating the loop soformed. Heretofore the rotation of the loop has been achieved throughthe medium of auxiliary mechanism associated with the package support,or by applying gravitational or magnetic force to the package to preventits rotation with the spindle.

The object of the present invention is to provide an improved form oftwisting device in which the necessary relative rotary movement betweenthe twisting element or spindle and the yarn package is obtained bymeans providing either a positively driven rotation of the package inthe opposite direction to that of the twisting element, or asubstantially stationary condition of the package during the twistingoperation.

A twisting device in accordance with the invention comprises a hollowspindle and a flyer operating in conjunction therewith to lead the yarnor the like outwardly in loop form from the bore of the spindle as drawnfrom a package mounted on the spindle and rotatable independentlythereof, and means for imparting to the package support a rotation ofalgebraically less speed than that of the spindle, said means dependingupon the rolling contact of a rotor, which is arranged in drivingrelationship with the package support, with a non-rotary circular raceor track the axis whereof is eccentric to the axis of the rotor.

Such an arrangement enables the speed of rotation of the package to becontrolled, reducing the risk of damage to the spindle by an unbalancedpackage and preventing variation in the amount of additional twistintroduced into the yarn or the like.

The nature of the invention and the manner in which it may be carriedinto effect are hereinafter more fully described with reference to theaccompanying drawings, of which Fig. 1 is a vertical section of acomplete spinning um't; Fig. 2 is a similar view of a modificationthereof, and Fig. 3 is a similar view of a further modification.

In the embodiment shown in Fig. 1, the spindle l is mounted in twospaced anti-friction journal bearings, i. e. a bearing 2 at or near toits mid-point and a bearing 3 at its base. Said bearings are supportedin a tubular bolster 4 apertured at 5 to provide access for a drivingtape or band 6 to a spindle wharve I located between the bearing points2- and 3. The bolster 4 is extended upwardly in the form of a bowl toprovide by its upper rim 8 an annular internal race l0. co-axial withthe main spindle axis and surrounding the rotor hereinafter described.

The upper part II of the spindle I constitutes a bearing member uponwhich a yarn package or bobbin 1! is carried by means of a plate l3having a central hub l4 enclosing anti-friction bearings I5 and I6 bywhich it is mounted on said bearing member II with capability ofrotation independently of the spindle I.

Immediately above the aforesaid journal bearing 2 the spindle l carriesa radially projecting flyer or yarn guide l1, and the arrangement issuch that a yarn to be twisted (indicated by the numeral I8) is led fromthe package l2 through the inwardly turned upper extremity of thepackage tube l9, down an axial bore 20 in the upper part II of thespindle, through an aperture 2| at the foot of said bore 20, radiallyoutward beneath the rotor and upwardly through the flyer or yarn guideI! to the usual delivery rollers (not shown).

Beneath the package-supporting plate I 3' the spindle is cranked, andsaid crank 22 carries an anti-friction bearing 23 upon the outer elementof which is mounted a rotor 24 of disc formation, the periphery whereofis located at the same level as the annular internal race ll! of thebowlshaped part 8 of the bolster 4. The radial dimension of said rotordisc 24 is such that its periphery makes contact with the said annularrace I0 at one side; diametrically opposite said point of contact thespace between the rotor disc 24 and the annular race I0 is justsuflicient to accommodate the flyer or yarn guide I! projecting upwardlythrough the same.

In operation, the revolution of the fiyer H inserts twist in the yarn l8passing down through the hollow spindle from the package l2. Due to theeccentric or orbital motion of the crank 22 the rotor 24 is constrainedto move with rolling contact about the surface of the annular race I0,resulting in the rotor 24 revolving in the direction opposite to that ofthe spindle rotation. The frictional contact between the plate l3 andthe rotor 24 may be relied upon to communicate the reversed drivingmotion to the package l2, and if necessary suitably prepared frictionsurfaces may be provided on these elements to transmit the drive, anydesired speed of the package which permitting it to assume agyratory-motion as the spindle revolves.

The package support is mounted by means of anti-friction bearings I5, [6upon the bored upward axial extension H of the spindle, and theplate-portion l3a of said support constitutes a space between the rotor31 and the race 38. leading it outside the spindle to a fiyer 4| mountedhorizontally on the outen wall thereof, whence said yarn 18 will betaken upwardly to the balloon.

The package support 36 is made of resilient material, in order that itmay absorb vibrations due to the gyration of the shaft 35 and the partssupported thereby.

What I claim as my invention and desire to secure by Letters Patent is:

l. A twisting device, for twisting yarns, threads or filamentscomprising, in combination, a hollow spindle, a, package supportsurrounding the spindle, a fiyer, fiyer driving means, the hollow rotorwhich is arranged to make contact with the "annular internal race Illaof ,the bowl-shaped underside of said rotor plate 13a. to a position inwhich it will guide a yarn I8 which has passed down through the bore 28of the spindle, outwardly through the space between the rotor I and theinternal race lfla of the bowl-shaped member 8a diametrically oppositeto the point of contact between these members.

In operation, the revolution of the fiyer i! with the spindle I servesto rotate the loop of yarn l8 which is drawn from the package throughthe bore 28 of the spindle and thence outwardly and upwardly to theballoon. Due to the eccentric relationship which exists between therotor-plate 13a. and the annular race Illa as the latter is caused bythe aforesaid gyratory motion due to the crank 22 to roll around theperiphery of the former, the resultant effect is to rotate saidrotor-plate 13a in the direction opposite to that of the spindlerotation.

In the embodiment shown in Fig. 3 the spindle consists of a cylindricaltube 28 which is supported by means of two spaced anti-friction bearings28 and 30 upon a vertical axle 3i which is fixed in the spindle rail 32.The lower part of the outer wall of said tube 28 constitutes a wharve bymeans whereof the spindle is driven in the customary manner through theband or tape 6. In

its upper portion said spindle tube 28 is provided with spacedanti-friction bearings 33 and 35, in which is rotatably mounted a.hollow shaft 35 which carries the package support 36 at its upper endand which terminates at its lower end within the hollow interior of thespindle 28 in a hollow conical member 31 which constitutes the rotor.The said bearings 33, 34 are slightly oii'set with respect to the rotaryaxis of the spindle 28, in such manner that the revolution of thespindle 28 produces acorrespondingly gyratory motion of said shaft 35and the rotor 31 fixed thereon. The said gyration is utilised to producea rolling contact between the inner surface of the hollow conical rotor31 and a fiat circular table 38 which is fixed on the upper extremity ofthe aforesaid stationary axle 3| upon which the spindle is mounted; theperiphery of said table 38 may be bevelled or otherwise shaped at 39 toproduce a race or track conforming to the shape of the rotor 31.

At a point which corresponds to the-space between the rotor 31 and therace 39, i. e. diametrically opposite to their point of rolling contact,the spindle 28 is provided with an aperture 40 which forms a guide for ayarn l8, which has been drawn from the package l2 down the bore of thepackage support shaft 35 and through the spindle directing the yarn fromthe package to the flyer and the flyer directing the yarn to define aballoon which envelopes the package, the package support and the upperend of the spindle, and a mechanical reduction train connecting thefiyer driving means with the package support to control the rotarymotion of the package support, limiting it to a lesser valuealgebraically than that of the fiyer, said train comprising a nonrotary,circular race member, a rotary member having driving relation to thepackage support, said rotary member being eccentric to the race memberand having rolling contact therewith, and means driving the axis of oneof said members in a circular path about the axis of the other.

2. A twisting device as set forth in claim 1 in which the rotaryreduction train member is disposed eccentrically with respect to thespindle and the non-rotary member is disposed concentrically withrespect thereto, both saidmembers being distinct from the packagesupport, the package support being guided for rotary movement concentricwith the spindleand resting frictionally upon said rotary member.

3. A twisting device as set forth in claim 1, in which the fiyer extendsinto a. space between the rotary and non-rotary members of saidreduction train located substantially diametrically opposite the pointof engagement of said members.

4. A twisting device as set forth in claim 1 in which the non-rotarymember of the reduction train is mounted eccentrically with respect tothe spindle and is orbitally driven by the spindle, and the rotarymember of said train is concentric with the spindle and forms a unitarypart of the package support.

5. A twisting device as set forth in claim 1, whichincludes a bolsterthat provides pivotal support for the spindle, said bolster having anupper annular extension which forms the nonrotary member of saidreduction train.

6. A twisting device as set forth in claim 1, in which the spindle isonset to form a crank portion, the rotary reduction train member beingrotatively supported on the crank portion, and

the non-rotary member extending concentrically around the spindle and inrolling contact with the rotary member at a single point, and the flyerbeing mounted on the spindle so that it projects upward through thespace between the rotary and non-rotary members, substantially oppositethe point of rolling contact.

'7. A twisting device as claimed in claim 1 in which the spindleincorporates a crank portion, the device including a fixed bolstermounting for the spindle, the non-rotary reduction train member beingmounted on said crank portion and having an upward extension presentingan annular portion thereof the interior constitutes a circular race ortrack, and a flexible shroud. con- 5 necting the non-rotary member tothe bolster with freedom for orbital movement only.

8.Atwistingdeviceasclaimedinclaimlin which the spindle incorporates acrank portion.

with freedom for orbital movement only, the

rotary member constituting the package sup-. port and having rollingcontact at a single point with the inner face of the annular portion ofthe non-rotary member, and the liver being mounted on the spindle toproject upward between the rotary and non-rotary members substantiallyopposite the point of rolling contact.

9. A twisting device for twisting yarns, threads or filamentscomprising, in combination, a cylindrical tube, a fixed support on whichthe tube is mounted for rotation about a vertical axis, said tubeincluding a driving wharve portion, a

Y 6 circular race table on said fixed support within the tube. a packagesupporting shaft eccentrical 1y mounted in the tube, said shaft having ahollow conical rotor unitary with 'it, the interior surface of the rotorbeing in rolling contact with the racetable, the shaft having a hollowbore through it for conducting the yarn from the package, and the tubehaving a lateral aperture substantially opposite the point of saidrolling contact. and a fiver fixed on the tube in proximity to-saidaperture, the construction andiarrange- I ment being such that yarn mayhe led from the v tube bore through the space between the rotor and therace table and outwardly through the lateral aperture in the tube to theflyer.

some Ransom rqs'nm.

summons club The following references are of record in the file oi thispatent:

FOREIGN PATENTS Country Date Y Germany Aug. 1 5, 1935 Number

